Stable releases are infrequent but well tested compared to the nightly releases
If you need help using the emulator, see the following article.
As we are now drawing closer to releasing a new stable version, we encourage you to use the latest nightly instead. If you encounter a problem, you will likely be told to try the latest nightly as a first step.
There is a new nightly release anytime a change is made, so you are getting the latest and greatest (but sometimes buggy) experience
For help using these releases, see the following article.